From 5366d0c8bc2a8bb7a4e58e75c7e457e86d3d56f6 Mon Sep 17 00:00:00 2001
From: Benoît Canet
Date: Fri, 5 Sep 2014 15:46:18 +0200
Subject: block: Make the block accounting functions operate on BlockAcctStats

This is the next step for decoupling block accounting functions from
BlockDriverState.
In a future commit the BlockAcctStats structure will be moved from
BlockDriverState to the device models structures.

Note that bdrv_get_stats was introduced so device models can retrieve the
BlockAcctStats structure of a BlockDriverState without being aware of it's
layout.
This function should go away when BlockAcctStats will be embedded in the device
models structures.

CC: Kevin Wolf <kwolf@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Keith Busch <keith.busch@intel.com>
CC: Anthony Liguori <aliguori@amazon.com>
CC: "Michael S. Tsirkin" <mst@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Eric Blake <eblake@redhat.com>
CC: Peter Maydell <peter.maydell@linaro.org>
CC: Michael Tokarev <mjt@tls.msk.ru>
CC: John Snow <jsnow@redhat.com>
CC: Markus Armbruster <armbru@redhat.com>
CC: Alexander Graf <agraf@suse.de>
CC: Max Reitz <mreitz@redhat.com>

Signed-off-by: Benoît Canet <benoit.canet@nodalink.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 include/block/accounting.h | 10 +++++-----
 include/block/block.h      |  3 +++
 2 files changed, 8 insertions(+), 5 deletions(-)

(limited to 'include')

diff --git a/include/block/accounting.h b/include/block/accounting.h
index ea5998de04..50b42b3808 100644
--- a/include/block/accounting.h
+++ b/include/block/accounting.h
@@ -48,10 +48,10 @@ typedef struct BlockAcctCookie {
     enum BlockAcctType type;
 } BlockAcctCookie;
 
-void bdrv_acct_start(BlockDriverState *bs, BlockAcctCookie *cookie,
-        int64_t bytes, enum BlockAcctType type);
-void bdrv_acct_done(BlockDriverState *bs, BlockAcctCookie *cookie);
-void bdrv_acct_highest_sector(BlockDriverState *bs, int64_t sector_num,
-                              unsigned int nb_sectors);
+void block_acct_start(BlockAcctStats *stats, BlockAcctCookie *cookie,
+                      int64_t bytes, enum BlockAcctType type);
+void block_acct_done(BlockAcctStats *stats, BlockAcctCookie *cookie);
+void block_acct_highest_sector(BlockAcctStats *stats, int64_t sector_num,
+                               unsigned int nb_sectors);
 
 #endif
diff --git a/include/block/block.h b/include/block/block.h
index 5fb36b1d2d..07d6d8e67e 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -5,6 +5,7 @@
 #include "qemu-common.h"
 #include "qemu/option.h"
 #include "block/coroutine.h"
+#include "block/accounting.h"
 #include "qapi/qmp/qobject.h"
 #include "qapi-types.h"
 
@@ -574,4 +575,6 @@ void bdrv_io_plug(BlockDriverState *bs);
 void bdrv_io_unplug(BlockDriverState *bs);
 void bdrv_flush_io_queue(BlockDriverState *bs);
 
+BlockAcctStats *bdrv_get_stats(BlockDriverState *bs);
+
 #endif
-- 
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